Posted 12/16/2013 04:31 (#3522091 - in reply to #3522018) Subject: Re: 400 big cam cummins??
SouthCentral WI
I would say the "key" is to keep the coolant additive package up to the high end of the scale or you will have liner pitting. To high and you will get to put in a water pump. That was always our issue with the 88 nt big cam 4 which is probably what this truck has if it. Assuming that it is the original engine and it is not an N14. BTDT
Towman
400 big cam cummins??
